Hi Binay,
You can find a lot of information about the Network planning and switch planning in ericsson’s website.
Here’s the URL
http://www.ericsson.com/about/telecom
And If ur using Ericsson switch means, it must be AXE! right? For that too u’ve a lot of info on the same website…… Try searching for “AXE”, and it has a lot of pdfs also.